title: 2-Acetyl-amino-1,3,4,6-tetra-O-(tri-methyl-silyl)-2-de-oxy-α-d-gluco-pyran-ose.
abstract: The title compound, C20H47NO6Si4, was synthesized by per-O-tri-methyl-silylation of N-acetyl-d-glucosa-mine using chloro-tri-methyl-silane in the presence of hexa-methyl-disiloxane. The tri-methyl-silyl group and acetamido group are located on the same side of the pyran ring, showing an α-configuration glycoside. One of the tri-methyl-silyl groups is disordered over two orientations, with site-occupancy factors of 0.625 (9) and 0.375 (9). In the crystal, N-H⋯O hydrogen bonds link the mol-ecules into supra-molecular chains along the a-axis direction.
authors.affiliation: Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang 310027, People's Republic of China.
authors.forename: Zhao-Dong
authors.initials: ZD
authors.lastname: Cheng
authors.forename: Yan-Li
authors.initials: YL
authors.lastname: Cui
authors.forename: Jian-Wei
authors.initials: JW
authors.lastname: Mao